Hi Alan n Linda, We travelled across the Plenty in June '07 and apart from a small stretch on the Eastern end where the wheel tracks were a little deep and required clearence, the road was suitable for sedans. Providing it has not seen recent rain when u travel there should not be any issues. As for fuel, I believe that Tobermorey is now closed on the border so the next fuel would be Jervios, a little over 400km West of Boulia. Time, well as a guide, we were a little rushed to get back to Brissy and done Alice to Boulia in a day fairly comfortable towing a Builders trailer and the ute loaded up with the race bike etc. Hope this helps